One of the least desirable aspects of playing guitar is changing strings. In an effort to help alleviate this time consuming procedure, Ernie Ball introduced the motorized Power Peg in 2009. Seeing the difficulty in changing his own strings, Brian Ball envisioned a tool for musicians that speeds up the process while minimizing the manual discomforts of stringing by hand. The PowerPeg allows you to string your guitar up to 70% faster; eliminating fatigue and repetitive motion caused by most pegwinders and the manuel hand winding process. Compact and portable, the Ernie Ball PowerPeg is powered by 4 AA batteries and perfectly calibrated for easy operation.